'iperf' est un outils Open, installable depuis un RPM, permettant de calculer le débit réseau entre 2 serveurs.
Le fonctionnement est simple:
- Récupérer le .RPM sur chacun des serveurs à analyser
- Installer le RPM par la commande 'rpm -ivh Nom_Paquet.rpm'
- Lancer ensuite le service d'écoute sur le premier serveur : 'iperf -s'.
- Lancer le test depuis l'autre serveur en spécifiant l'adresse du serveur à contacter : 'iperf -c IP_add_Serveur -t 60 -P 8' ( Ou P 8 est le nombre de traitements en parallèle)
Après le temps spécifié par l'option '-t', le résultat est affiché.
Exemple côté serveur :
# iperf -s
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 512 KByte (default)
------------------------------------------------------------
[ 5] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 57313
[ 7] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 57315
[ 6] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 57314
[ 8] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 57316
[ 9] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 57317
[ 10] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 57318
[ 11] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 57319
[ 12] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 57320
[ ID] Interval Transfer Bandwidth
[ 7] 0.0-60.0 sec 8.15 GBytes 1.17 Gbits/sec
[ 6] 0.0-60.0 sec 8.18 GBytes 1.17 Gbits/sec
[ 8] 0.0-60.0 sec 8.15 GBytes 1.17 Gbits/sec
[ 10] 0.0-60.0 sec 8.18 GBytes 1.17 Gbits/sec
[ 12] 0.0-60.0 sec 8.18 GBytes 1.17 Gbits/sec
[ 5] 0.0-60.0 sec 8.17 GBytes 1.17 Gbits/sec
[ 9] 0.0-60.0 sec 8.17 GBytes 1.17 Gbits/sec
[ 11] 0.0-60.0 sec 8.16 GBytes 1.17 Gbits/sec
[SUM] 0.0-60.0 sec 65.3 GBytes 9.35 Gbits/sec
[ 5] local 10.42.3.166 port 5001 connected with 10.42.3.167 port 61891
[ 5] 0.0-60.0 sec 59.0 GBytes 8.44 Gbits/sec
Exemple avec 8 canaux:
# iperf -c 10.42.3.166 -t 60 -P 8
------------------------------------------------------------
Client connecting to 10.42.3.166, TCP port 5001
TCP window size: 256 KByte (default)
------------------------------------------------------------
[ 10] local 10.42.3.167 port 57320 connected with 10.42.3.166 port 5001
[ 5] local 10.42.3.167 port 57314 connected with 10.42.3.166 port 5001
[ 6] local 10.42.3.167 port 57316 connected with 10.42.3.166 port 5001
[ 8] local 10.42.3.167 port 57318 connected with 10.42.3.166 port 5001
[ 7] local 10.42.3.167 port 57315 connected with 10.42.3.166 port 5001
[ 11] local 10.42.3.167 port 57319 connected with 10.42.3.166 port 5001
[ 3] local 10.42.3.167 port 57313 connected with 10.42.3.166 port 5001
[ 9] local 10.42.3.167 port 57317 connected with 10.42.3.166 port 5001
[ ID] Interval Transfer Bandwidth
[ 10] 0.0-60.0 sec 8.18 GBytes 1.17 Gbits/sec
[ 5] 0.0-60.0 sec 8.18 GBytes 1.17 Gbits/sec
[ 6] 0.0-60.0 sec 8.15 GBytes 1.17 Gbits/sec
[ 8] 0.0-60.0 sec 8.18 GBytes 1.17 Gbits/sec
[ 7] 0.0-60.0 sec 8.15 GBytes 1.17 Gbits/sec
[ 3] 0.0-60.0 sec 8.17 GBytes 1.17 Gbits/sec
[ 9] 0.0-60.0 sec 8.17 GBytes 1.17 Gbits/sec
[ 11] 0.0-60.0 sec 8.16 GBytes 1.17 Gbits/sec
[SUM] 0.0-60.0 sec 65.3 GBytes 9.35 Gbits/sec
Exemple côté client avec 1 canal :
$ iperf -c 10.42.3.166 -t 60 -P 1
------------------------------------------------------------
Client connecting to 10.42.3.166, TCP port 5001
TCP window size: 256 KByte (default)
------------------------------------------------------------
[ 3] local 10.42.3.167 port 61891 connected with 10.42.3.166 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-60.0 sec 59.0 GBytes 8.44 Gbits/sec
# iperf -h
Usage: iperf [-s|-c host] [options]
iperf [-h|--help] [-v|--version]
Client/Server:
-f, --format [kmKM] format to report: Kbits, Mbits, KBytes, MBytes
-i, --interval # seconds between periodic bandwidth reports
-l, --len #[KM] length of buffer to read or write (default 8 KB)
-m, --print_mss print TCP maximum segment size (MTU - TCP/IP header)
-o, --output <filename> output the report or error message to this specified file
-p, --port # server port to listen on/connect to
-u, --udp use UDP rather than TCP
-w, --window #[KM] TCP window size (socket buffer size)
-B, --bind <host> bind to <host>, an interface or multicast address
-C, --compatibility for use with older versions does not sent extra msgs
-M, --mss # set TCP maximum segment size (MTU - 40 bytes)
-N, --nodelay set TCP no delay, disabling Nagle's Algorithm
-V, --IPv6Version Set the domain to IPv6
Server specific:
-s, --server run in server mode
-U, --single_udp run in single threaded UDP mode
-D, --daemon run the server as a daemon
Client specific:
-b, --bandwidth #[KM] for UDP, bandwidth to send at in bits/sec
(default 1 Mbit/sec, implies -u)
-c, --client <host> run in client mode, connecting to <host>
-d, --dualtest Do a bidirectional test simultaneously
-n, --num #[KM] number of bytes to transmit (instead of -t)
-r, --tradeoff Do a bidirectional test individually
-t, --time # time in seconds to transmit for (default 10 secs)
-F, --fileinput <name> input the data to be transmitted from a file
-I, --stdin input the data to be transmitted from stdin
-L, --listenport # port to receive bidirectional tests back on
-P, --parallel # number of parallel client threads to run
-T, --ttl # time-to-live, for multicast (default 1)
-Z, --linux-congestion <algo> set TCP congestion control algorithm (Linux only)
Miscellaneous:
-x, --reportexclude [CDMSV] exclude C(connection) D(data) M(multicast) S(settings) V(server) reports
-y, --reportstyle C report as a Comma-Separated Values
-h, --help print this message and quit
-v, --version print version information and quit
[KM] Indicates options that support a K or M suffix for kilo- or mega-
The TCP window size option can be set by the environment variable
TCP_WINDOW_SIZE. Most other options can be set by an environment variable
IPERF_<long option name>, such as IPERF_BANDWIDTH.
Report bugs to <
